Developing device, rotary developing units, image formation apparatus and a computer system with a thickness regulator member and a roller support frame

摘要

A developing device includes a toner supporter for supporting toner, a toner supply member being pressed against the toner supporter to supply the toner to the toner supporter and a thickness regulation member for regulating thickness of the toner supplied to the toner supporter by the toner supply member. The thickness regulation member abuts the toner supporter on the toner supply member side of the toner supporter.